EP0803748A1 - Multifibre connector plug - Google Patents

Multifibre connector plug Download PDF

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Publication number
EP0803748A1
EP0803748A1 EP97201004A EP97201004A EP0803748A1 EP 0803748 A1 EP0803748 A1 EP 0803748A1 EP 97201004 A EP97201004 A EP 97201004A EP 97201004 A EP97201004 A EP 97201004A EP 0803748 A1 EP0803748 A1 EP 0803748A1
Authority
EP
European Patent Office
Prior art keywords
connector plug
coupling
coupling body
sleeve
spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97201004A
Other languages
German (de)
French (fr)
Other versions
EP0803748B1 (en
Inventor
Jan Peter Karel Van Koetsem
Danny Morlion
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FCI SA
Original Assignee
Framatome Connectors International SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Framatome Connectors International SAS filed Critical Framatome Connectors International SAS
Publication of EP0803748A1 publication Critical patent/EP0803748A1/en
Application granted granted Critical
Publication of EP0803748B1 publication Critical patent/EP0803748B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
    • G02B6/3818—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type
    • G02B6/3821—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type with axial spring biasing or loading means
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3869—Mounting ferrules to connector body, i.e. plugs
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
    • G02B6/3885—Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/389—Dismountable connectors, i.e. comprising plugs characterised by the method of fastening connecting plugs and sockets, e.g. screw- or nut-lock, snap-in, bayonet type
    • G02B6/3893—Push-pull type, e.g. snap-in, push-on

Definitions

  • the invention relates to a multifibre connector plug, comprising a connector plug part for receiving a plurality of optical fibres, said connector plug part having a contact face at one end, a coupling body, the connector plug part being slidable in said coupling body, wherein the connector plug part projects out of said coupling body with its end having said contact face, and a coupling sleeve enclosing said coupling body and being slidable on said coupling body from a coupling position into a decoupling position against the action of a spring means.
  • the spring means comprises separate spring elements making the assembly of the connector plug rather complicated.
  • the invention aims to provide an improved multifibre connector plug of the above-mentioned type.
  • the connector plug of the invention is characterized in that said spring means comprises at least one spring being an integrated unitary part of the coupling sleeve and engaging with a free end a corresponding support shoulder of the coupling body.
  • the coupling sleeve with the spring means is made of plastic material, wherein the spring means is unloaded in the coupling position.
  • Fig. 1 shows a perspective view of an embodiment of the multifibre connector plug of the invention, wherein for clarity sake the optical fibre cable is not shown.
  • Fig. 2 shows an exploded view of the connector plug of Fig. 1.
  • Fig. 3 shows an axial cross-section of the connector plug of Fig. 1 with an optical fibre cable connected thereto.
  • a multifibre connector plug 1 which in a manner known per se can be coupled with a corresponding connector plug for interconnecting a plurality of optical fibres.
  • the optical fibres of the connector plug 1 are schematically indicated at 2 in Fig. 3 and are part of an optical fibre cable 3 with an outer jacket 4 and a schematically indicated reinforcement jacket 5 usually made of Kevlar fibres.
  • the connector plug 1 is provided with a connector plug part 6, in which the uncovered optical fibres 2 are attached.
  • This connector plug part 6 is also indicated as ferrule.
  • the connector plug part 6 has a contact face 7, the optical fibres 2 ending in said contact face as indicated by reference numeral 8. Further the connector plug part 6 comprises two holes debouching in the contact face 7 at both sides of the ends of the optical fibres 2, wherein in this case guiding pins 9 are mounted in said holes. The pins 9 will be received in the holes of a corresponding connector plug part if the connector plug 1 is coupled with a corresponding connector plug 1.
  • the connector plug part 6 is slidably received within a coupling body 10 assembled of two identical halves 11, wherein the connector plug part 6 projects out of the coupling body 10 with its end having the contact face 7. As shown in Fig. 3, the connector plug part 6 is pressed with an edge 12 against an inner edge 13 of the coupling body 10 by a spring 14. This spring 14 is lying between the connector plug part 6 and a carrier sleeve 15 fixed within the coupling body 10 by means of two locking fingers 16.
  • the carrier sleeve 15 has a mounting surface 17 at its end opposite of the coupling body 10, the reinforcement jacket 5 of the optical cable 3 being attached to said mounting surface 17, for example by glueing.
  • the connector plug 1 is closed by an end sleeve or boot 18 attached to the end of the carrier sleeve 15 projecting out of the coupling body 10.
  • the end sleeve 18 encloses the reinforcement jacket 5 of the optical cable 3.
  • the connector plug 1 further comprises a coupling sleeve 19 enclosing the coupling body 10 and being slidable on this coupling body 10 from a coupling position shown in Figs. 1 and 3 into a withdrawn decoupling position not shown.
  • the coupling sleeve 19 encloses two recesses 20 provided in opposite sides of the coupling body 10.
  • a backpanel adapter for example can engage into said recesses for holding the connector plug 1 in the adapter.
  • Decoupling the connector plug 1 is possible by sliding the coupling sleeve 19 into the withdrawn decoupling position against the action of a spring means which after releasing the coupling sleeve 19 moves this coupling sleeve back into the coupling position.
  • the spring means comprises two springs 21 which are integrated parts of the coupling sleeve 19 and form a single unit therewith.
  • the coupling body 10 and the coupling sleeve 19 have a mainly rectangular cross-section, wherein the springs 21 are located at the two opposite long rectangular sides and join the end of the coupling sleeve 19 directed away from the connector plug part 6.
  • the coupling sleeve 19 and the springs 21 are made unitary of plastic material, wherein the springs 21 are unloaded in the coupling position shown in the drawings.
  • the springs 21 are made as a substantially sine-shaped material strip joining the material of the coupling sleeve 19.
  • the free end of the springs 21 is formed as a straight support section 22 engaging a corresponding support shoulder 23 of the coupling body 10.
  • Each support shoulder 23 further carries a cover lip 24 at least substantially covering the corresponding spring 21 whereby damage of the springs 21 is avoided.
  • the coupling sleeve 19 carries on both other opposite sides lips 25 extending from the coupling sleeve 19 along an equal length as the springs 21.
  • the assembly of the coupling sleeve 19 and the coupling body 10 is a rather simple action, wherein the springs 21 are automatically lying at the correct location.
  • the connector plug 1 comprises a relatively low number of parts, wherein mounting of the optical cable 3 is simplified in that the coupling body 10 consists of two halves 11 which can be simply mounted around the cable 3.
  • the lips 25 are for example provided with operating lips 26 extending obliquely outwardly in the direction of the end sleeve 18. These operating lips 26 facilitate the movement of the coupling sleeve 19 from the coupling position into the decoupling position.

Abstract

A multifibre connector plug (1) comprises a connector plug part (6) for receiving a plurality of optical fibres (2), a coupling body (10) and a coupling sleeve (19). The connector plug part is provided with a contact face (7) at one end and is slidable in the coupling body.
The connector plug part projects out of the coupling body with its end having the contact face. The coupling sleeve (19) encloses the coupling body and is slidable on this coupling body from a coupling position into a decoupling position against the action of a spring means (21).
The spring means (21) comprises at least one spring (21) being an integrated unitary part of the coupling sleeve (19) and engaging with a free end (22) a corresponding support shoulder (23) of the coupling body (10).

Description

  • The invention relates to a multifibre connector plug, comprising a connector plug part for receiving a plurality of optical fibres, said connector plug part having a contact face at one end, a coupling body, the connector plug part being slidable in said coupling body, wherein the connector plug part projects out of said coupling body with its end having said contact face, and a coupling sleeve enclosing said coupling body and being slidable on said coupling body from a coupling position into a decoupling position against the action of a spring means.
  • In the known connector plug of this type the spring means comprises separate spring elements making the assembly of the connector plug rather complicated.
  • The invention aims to provide an improved multifibre connector plug of the above-mentioned type.
  • To this end the connector plug of the invention is characterized in that said spring means comprises at least one spring being an integrated unitary part of the coupling sleeve and engaging with a free end a corresponding support shoulder of the coupling body.
  • In this manner a simplified connector plug is obtained, wherein for the assembly of coupling body, coupling sleeve and spring means it is only necessary to push the coupling sleeve on the coupling body. Mounting separate springs is not required anymore so that manufacturing cost can be decreased.
  • According to a favourable embodiment the coupling sleeve with the spring means is made of plastic material, wherein the spring means is unloaded in the coupling position.
  • The invention will be further explained by reference to the drawings in which an embodiment of the connector plug according to the invention is schematically shown.
  • Fig. 1 shows a perspective view of an embodiment of the multifibre connector plug of the invention, wherein for clarity sake the optical fibre cable is not shown.
  • Fig. 2 shows an exploded view of the connector plug of Fig. 1.
  • Fig. 3 shows an axial cross-section of the connector plug of Fig. 1 with an optical fibre cable connected thereto.
  • Referring to the drawings there is shown a multifibre connector plug 1 which in a manner known per se can be coupled with a corresponding connector plug for interconnecting a plurality of optical fibres. The optical fibres of the connector plug 1 are schematically indicated at 2 in Fig. 3 and are part of an optical fibre cable 3 with an outer jacket 4 and a schematically indicated reinforcement jacket 5 usually made of Kevlar fibres.
  • The connector plug 1 is provided with a connector plug part 6, in which the uncovered optical fibres 2 are attached. This connector plug part 6 is also indicated as ferrule.
  • The connector plug part 6 has a contact face 7, the optical fibres 2 ending in said contact face as indicated by reference numeral 8. Further the connector plug part 6 comprises two holes debouching in the contact face 7 at both sides of the ends of the optical fibres 2, wherein in this case guiding pins 9 are mounted in said holes. The pins 9 will be received in the holes of a corresponding connector plug part if the connector plug 1 is coupled with a corresponding connector plug 1.
  • The connector plug part 6 is slidably received within a coupling body 10 assembled of two identical halves 11, wherein the connector plug part 6 projects out of the coupling body 10 with its end having the contact face 7. As shown in Fig. 3, the connector plug part 6 is pressed with an edge 12 against an inner edge 13 of the coupling body 10 by a spring 14. This spring 14 is lying between the connector plug part 6 and a carrier sleeve 15 fixed within the coupling body 10 by means of two locking fingers 16.
  • The carrier sleeve 15 has a mounting surface 17 at its end opposite of the coupling body 10, the reinforcement jacket 5 of the optical cable 3 being attached to said mounting surface 17, for example by glueing.
  • Finally, the connector plug 1 is closed by an end sleeve or boot 18 attached to the end of the carrier sleeve 15 projecting out of the coupling body 10. The end sleeve 18 encloses the reinforcement jacket 5 of the optical cable 3.
  • The connector plug 1 further comprises a coupling sleeve 19 enclosing the coupling body 10 and being slidable on this coupling body 10 from a coupling position shown in Figs. 1 and 3 into a withdrawn decoupling position not shown. In the coupling position the coupling sleeve 19 encloses two recesses 20 provided in opposite sides of the coupling body 10. In a manner known per se locking fingers of a backpanel adapter, for example can engage into said recesses for holding the connector plug 1 in the adapter. Decoupling the connector plug 1 is possible by sliding the coupling sleeve 19 into the withdrawn decoupling position against the action of a spring means which after releasing the coupling sleeve 19 moves this coupling sleeve back into the coupling position.
  • In the connector plug 1 shown the spring means comprises two springs 21 which are integrated parts of the coupling sleeve 19 and form a single unit therewith. In the embodiment shown the coupling body 10 and the coupling sleeve 19 have a mainly rectangular cross-section, wherein the springs 21 are located at the two opposite long rectangular sides and join the end of the coupling sleeve 19 directed away from the connector plug part 6.
  • The coupling sleeve 19 and the springs 21 are made unitary of plastic material, wherein the springs 21 are unloaded in the coupling position shown in the drawings. The springs 21 are made as a substantially sine-shaped material strip joining the material of the coupling sleeve 19. The free end of the springs 21 is formed as a straight support section 22 engaging a corresponding support shoulder 23 of the coupling body 10. Each support shoulder 23 further carries a cover lip 24 at least substantially covering the corresponding spring 21 whereby damage of the springs 21 is avoided.
  • To protect the springs the coupling sleeve 19 carries on both other opposite sides lips 25 extending from the coupling sleeve 19 along an equal length as the springs 21.
  • As the springs 21 are made unitary with the coupling sleeve 19, the assembly of the coupling sleeve 19 and the coupling body 10 is a rather simple action, wherein the springs 21 are automatically lying at the correct location.
  • Further, it will be clear from the above that the connector plug 1 comprises a relatively low number of parts, wherein mounting of the optical cable 3 is simplified in that the coupling body 10 consists of two halves 11 which can be simply mounted around the cable 3.
  • The invention is not restricted to the above-described embodiment which can be varied in a number of ways within the scope of the claims. In the connector plug 1 described the lips 25 are for example provided with operating lips 26 extending obliquely outwardly in the direction of the end sleeve 18. These operating lips 26 facilitate the movement of the coupling sleeve 19 from the coupling position into the decoupling position.

Claims (8)

  1. Multifibre connector plug (1), comprising a connector plug part (6) for receiving a plurality of optical fibres (2), said connector plug part having a contact face (7) at one end, a coupling body (10), the connector plug part being slidable in said coupling body, wherein the connector plug part projects out of said coupling body with its end having said contact face, and a coupling sleeve (19) enclosing said coupling body and being slidable on said coupling body from a coupling position into a decoupling position against the action of a spring means (21), characterized in that said spring means comprises at least one spring (21) being an integrated unitary part of the coupling sleeve (19) and engaging with a free end (22) a corresponding support shoulder (23) of the coupling body (10).
  2. Connector plug according to claim 1, wherein the coupling sleeve (19) with the spring means (21) is made of plastic material and wherein the spring means is unloaded in the coupling position.
  3. Connector plug according to claim 1 or 2, wherein each spring (21) of the coupling sleeve (19) is a substantially sine-shaped material strip joining at one side the coupling sleeve and at the other side terminating in a straight support section (22) abutting against the support shoulder (23) of the coupling body (10).
  4. Connector plug according to anyone of the preceding claims, wherein each support shoulder (23) of the coupling body (10) carries a lip (24) at least substantially covering the corresponding spring (21).
  5. Connector plug according to anyone of the preceding claims, wherein the coupling body (10) and the coupling sleeve (19) each have a substantially rectangular cross-section, wherein the coupling sleeve at one end carries an integrated spring (21) at two opposite sides and integrated lips (25) at both other opposite sides, said lips (25) extending along the same length from the coupling sleeve as the springs.
  6. Connector plug according to claim 5, wherein the lips (25) carry obliquely outwardly extending operating lips (26).
  7. Connector plug according to anyone of the preceding claims, wherein the coupling body (10) comprises two identical halves (11).
  8. Connector plug according to anyone of the preceding claims, wherein a carrier sleeve (15) is fixed in the coupling body (10) at the end opposite the connector plug part (6), said carrier sleeve at the end directed away from the coupling body having a mounting surface (17) for a reinforcement jacket (5) of an optical cable (3) comprising said optical fibres (2), wherein a boot (18) is fixed on said end while clamping the reinforcement jacket.
EP97201004A 1996-04-26 1997-04-09 Multifibre connector plug Expired - Lifetime EP0803748B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1002955 1996-04-26
NL1002955A NL1002955C2 (en) 1996-04-26 1996-04-26 Multifiber connector plug.

Publications (2)

Publication Number Publication Date
EP0803748A1 true EP0803748A1 (en) 1997-10-29
EP0803748B1 EP0803748B1 (en) 2005-03-23

Family

ID=19762737

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97201004A Expired - Lifetime EP0803748B1 (en) 1996-04-26 1997-04-09 Multifibre connector plug

Country Status (5)

Country Link
US (1) US5898808A (en)
EP (1) EP0803748B1 (en)
JP (1) JP3669808B2 (en)
DE (1) DE69732815T2 (en)
NL (1) NL1002955C2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10001680C1 (en) * 2000-01-12 2001-08-23 Infineon Technologies Ag Multi-channel optical coupling arrangement
WO2007016963A1 (en) * 2005-08-05 2007-02-15 Fci Spring ferrule
FR2943429A1 (en) * 2009-03-20 2010-09-24 Radiall Sa Optical contact for e.g. multipin connector used in telecommunications field, has monoblock body with fiber inlet face and elastically deformable portion exerting pressure force toward ferrule, and holder arranged between body and ferrule

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US7680388B2 (en) * 2004-11-03 2010-03-16 Adc Telecommunications, Inc. Methods for configuring and testing fiber drop terminals
EP1875287A1 (en) 2005-04-19 2008-01-09 ADC Telecommunications, Inc. Loop back plug and method
US8915659B2 (en) 2010-05-14 2014-12-23 Adc Telecommunications, Inc. Splice enclosure arrangement for fiber optic cables
US8885998B2 (en) 2010-12-09 2014-11-11 Adc Telecommunications, Inc. Splice enclosure arrangement for fiber optic cables
EP2926181B1 (en) 2012-11-30 2020-04-15 CommScope Technologies LLC Fiber optic connector with field installable outer connector housing
US9312637B2 (en) * 2013-05-30 2016-04-12 Tyco Electronics Corporation Communication system having a floatable connector assembly
CN104849816B (en) 2014-02-14 2017-01-11 泰科电子(上海)有限公司 Optical fiber connector and assembly method therefor
CN104849815B (en) * 2014-02-14 2017-01-18 泰科电子(上海)有限公司 Optical fiber connector and assembly method therefor
CN105445862B (en) 2014-07-09 2018-01-19 泰科电子(上海)有限公司 The joints of optical fibre and its on-site assembly method
CN105223659B (en) * 2015-08-31 2016-09-21 中航光电科技股份有限公司 Resilient push and use plug casing and the daughter board plug of this resilient push
US10620385B2 (en) 2015-11-30 2020-04-14 Commscope Technologies Llc Fiber optic connector and assembly thereof
US10641970B2 (en) 2015-12-16 2020-05-05 Commscope Technologies Llc Field installed fiber optic connector
EP3588154A1 (en) * 2018-06-28 2020-01-01 Diamond SA Plug-in element for an optical plug connector

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2062891A (en) * 1979-10-31 1981-05-28 Bunker Ramo Fiber optic connector for high density applications and method of manufacturing fiber optic connectors
US4759599A (en) * 1985-12-24 1988-07-26 Kabushiki Kaisha Toshiba Optical connector
US5373574A (en) * 1992-05-20 1994-12-13 Diamond Sa Connector for an optical fiber

Family Cites Families (2)

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Publication number Priority date Publication date Assignee Title
US4697871A (en) * 1985-05-28 1987-10-06 Dorran Photonics Incorporated Termination of optical fibers
US5748818A (en) * 1995-12-22 1998-05-05 Weiss; Roger E. Massive parallel optical interconnect system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2062891A (en) * 1979-10-31 1981-05-28 Bunker Ramo Fiber optic connector for high density applications and method of manufacturing fiber optic connectors
US4759599A (en) * 1985-12-24 1988-07-26 Kabushiki Kaisha Toshiba Optical connector
US5373574A (en) * 1992-05-20 1994-12-13 Diamond Sa Connector for an optical fiber

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10001680C1 (en) * 2000-01-12 2001-08-23 Infineon Technologies Ag Multi-channel optical coupling arrangement
US6604862B2 (en) 2000-01-12 2003-08-12 Infineon Technologies Ag Multichannel optical coupling configuration
WO2007016963A1 (en) * 2005-08-05 2007-02-15 Fci Spring ferrule
FR2943429A1 (en) * 2009-03-20 2010-09-24 Radiall Sa Optical contact for e.g. multipin connector used in telecommunications field, has monoblock body with fiber inlet face and elastically deformable portion exerting pressure force toward ferrule, and holder arranged between body and ferrule

Also Published As

Publication number Publication date
NL1002955C2 (en) 1997-10-28
EP0803748B1 (en) 2005-03-23
US5898808A (en) 1999-04-27
JP3669808B2 (en) 2005-07-13
JPH1048473A (en) 1998-02-20
DE69732815D1 (en) 2005-04-28
DE69732815T2 (en) 2006-04-06

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